Detail of GB/T 22068-2018

Introduction of GB/T 22068-2018

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 22068-2008 Electrically driven compressor assembly for automobile air conditioning. Besides editorial changes, this standard technically differs from GB/T 22068-2008 mainly as follows: ——The application scope of the standard was modified (see Chapter 1 of this standard, and Chapter 1 of Edition 2008); ——Types and basic parameters of electrically driven compressor assembly were modified (see Chapter 4 of this standard, and Chapter 4 of Edition 2008); ——The nominal conditions and cooling (heating) performance factor limits of electrically driven compressor assembly were modified (see 4.3 and 5.3 of this standard, and 6.3 and 5.2 of Edition 2008); ——The requirements and test methods for noise test conditions and limits of electrically driven compressor assembly were modified (see 5.4 and 6.4 of this standard, and 6.4 and 5.3 of Edition 2008); ——The requirements and test methods were added for the exciting force of electrically driven compressor assembly (see 5.5 and 6.5); ——The compressor with direct current motor was modified of the requirements for internal cleanliness, internal moisture content, airtightness, corrosion resistance, insulation resistance of motor stator winding to shell, voltage resistance of motor stator winding to shell, compression strength, vibration resistance, etc. (see Chapter 5 of this standard, and Chapter 5 of Edition 2008); ——The requirements for the insulation resistance of drive controller were modified (see 5.7.2 of this standard, and 5.5.2 of Edition 2008); ——The test methods for compression strength and vibration resistance of compressor with direct current motor were modified (see 6.6.4 and 6.6.5 of this standard, and 6.5.4 and 6.5.12 of Edition 2008); ——The durability test conditions of electrically driven compressor assembly were modified (see 6.8 of this standard, and 6.7 of Edition 2008); ——The requirements and test methods were added for the voltage fluctuation resistance of electrically driven compressor assembly (see 5.9 and 6.9). This standard was proposed by China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee 238 on Refrigeratory Equipment of Standardization Administration of China (SAC/TC 238). The previous edition of this standard is as follows: ——GB/T 22068-2008. Electrically driven compressor assembly for automobile air conditioning 1 Scope This standard specifies the terms and definitions, type and basic parameters, technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage of electrically driven compressor assembly for automobile air conditioning (hereinafter referred to as "electrically driven compressor assembly"). This standard is applicable to the electrically driven compressor assembly for automobile air conditioning. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies GB/T 191 Packaging — Pictorial marking for handling of goods GB/T 2423.17 Environmental testing for electric and electronic products — Part 2: Test method — Test ka: salt mist GB/T 2423.34-2012 Environmental testing — Part 2: Test methods — Test Z/AD: Composite temperature/humidity cyclic test GB/T 4208 Degrees of protection provided by enclosure(IP code) GB/T 5773 The method of performance test for positive displacement refrigerant compressors GB/T 13306 Plates GB/T 17619 Limits and methods of testing for immunity of electrical/electronic sub-assemblies in vehicles to electromagnetic radiation GB/T 18488.1 Drive motor system for electric vehicles — Part 1: Specification GB/T 18488.2 Drive motor system for electric vehicles — Part 2: Test methods GB/T 18655 Vehicles, boats and internal combustion engines — Radio disturbance characteristics — Limits and methods of measurement for the protection of on-board receivers GB/T 19951-2005 The safety constructional requirements for double-deck large passenger vehicles GB/T 21360 Refrigerant compressor for motor vehicle air condition GB/T 21437.2 Road vehicles — Electrical disturbances from conduction and coupling — Part 2: Electrical transient conduction along supply lines only GB/T 21437.3 Road vehicles — Electrical disturbances from conduction and coupling — Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines JB/T 4330 Determination of noise emitted by refrigerating and air conditioning equipments JB/T 7249 Terminology of refrigeration equipment 3 Terms and definitions For the purposes of this document, the terms and definitions given in JB/T 7249 and B/T 5773, as well as the following apply. 3.1 electrically driven compressor assembly closed or semi-closed displacement refrigerant compressor assembly, consisting of compressor with direct current motor and drive controller, driven by a motor, used in the automobile air conditioning system of vapor compression refrigeration cycle. Note: The two parts are independently installed and used for split-type electrically driven compressor assembly, and assembled together for integrated one. 3.2 compressor with direct current motor closed or semi-closed structure consisting of displacement refrigerant compressor and motor. 3.3 drive controller device connecting to the main power supply of automobile which controls the energy transmission and conversion between DC power supply and compressor motor and consists of external control signal interface circuit, motor control circuit and power driven circuit as well as protective circuit. 3.4 exciting force periodic simple harmonic vibration force generated by the rotation unbalance mass and the running air flow pulsation of the electrically driven compressor assembly as the vibration source. 4 Type and basic parameters 4.1 Type 4.1.1 Electrically driven compressor assembly is divided by function into split-cooling type, heat-pump type and low-temperature heat-pump type, thereof: ——heat-pump type electrically driven compressor assembly shall be able to operate normally at a vaporization temperature of -10℃; ——low-temperature heat-pump type electrically driven compressor assembly shall be able to operate normally at a vaporization temperature of -25℃. 4.1.2 It is divided by structural style into integrated type and split type. 4.1.3 It is divided by displacement range into Class A, Class B and Class C, thereof: ——Class A displacement: 8 cm3/r~<25 cm3/r; ——Class B displacement: 25 cm3/r~<40 cm3/r; ——Class C displacement: ≥40 cm3/r. 4.2 Basic parameters The basic parameters of the electrically driven compressor assembly are shown in Table 1. Table 1 Basic parameters of the electrically driven compressor assembly Component Item Value Class A Class B Class C Compressor with direct current motor Displacement/cm3/r ≥8-25 ≥25-40 ≥40 Refrigerant used HFC134a, HFC407C or as user required Lubricating oil According to design or user requirements Rated voltage of motor/ V As user required Drive controller Rated voltage / V 4.3 Nominal conditions The nominal conditions of the electrically driven compressor assembly are shown in Table 2.   Table 2 Nominal conditions of the electrically driven compressor assembly Test condition Voltage V Rotation speed of compressor r/min Vaporization temperature ℃ Condensing temperature ℃ Suction superheat degree K Temperature before expansion a ℃ Ambient temperature ℃ Nominal refrigerating Rated voltage Nominal design rotation speed 7 55 10 47 50 Nominal heating of heat pump -1 43 10 35 10 Nominal heating of low-temperature heat pump -15 35 10 27 -10 a For the compressor equipped with an economizer, the economizer has a subcooling of 5 K before expansion of the air compensating circuit. At the same time, the manufacturer shall provide the pressure and temperature parameters of the refrigerant gas at the outlet of the air compensating circuit of the economizer. 5 Technical requirements 5.1 General requirements The electrically driven compressor assembly shall be manufactured in accordance with the drawings and technical documents (or the agreement between the user and the manufacturer) approved according to the prescribed procedures. 5.2 Appearance The compressor with direct current motor and the drive controller shall be free from oil, rust, sharp edges and other appearance defects on the outside surface, or broken wire sheath or deformed or damaged connector. 5.3 Refrigerating (heating) capacity, input power and refrigerating (heating) performance factor Measured refrigerating (heating) capacity of the electrically driven compressor assembly shall not be less than 95% of the nominal refrigerating (heating) capacity; measured input power shall not be greater than 110% of the nominal input power. Measured refrigerating (heating) performance factor of the electrically driven compressor assembly shall not be less than 95% of the indication value and the values specified in Table 3. Refrigerating (heating) performance factor of the electrically driven compressor assembly without a drive controller shall not be less than 110% of the values specified in Table 3.   Table 3 Refrigerating (heating) performance factor limits of the electrically driven compressor assembly Grade of applicable rated voltage Testing voltage V Rotation speed of compressor r/min Refrigerating performance factor W/W Heating performance factor W/W Heat-pump type Low-temperature heat-pump type 12 V-120 V Rated voltage Nominal design rotation speed 2.1 2.6 2.3 144 V-800 V 2.2 2.7 2.5 5.4 Noise The measured single-point maximum noise of the electrically driven compressor assembly shall not be greater than those specified in Table 4. Table 4 Noise limit (sound pressure level) of the electrically driven compressor assembly Nominal rotation speed range r/min <2 000 ≥2 000- 3 000 ≥3 000- 4 000 ≥4 000- 5 000 ≥5 000- 6 000 ≥6 000- 7 000 ≥7 000 Noise value dB(A) Class A 70 74 77 78 82 85 88 Class B 72 76 78 80 85 90 93 Class C 74 78 80 82 86 91 94 5.5 Exciting force Within the allowable rotation speed range, the measured exciting force of the electrically driven compressor assembly in the directions of X-axis, Y-axis and Z-axis shall not exceed the values calculated according to Formula (1): Fmax=k×n(1) Where, Fmax ——the maximum permissible exciting force, N; K——the excitation coefficient (0.02), N·min/r; n——the rotation speed of compressor, r/min. 5.6 Compressor with direct current motor 5.6.1 Internal cleanliness The internal cleanliness of the compressor with direct current motor shall meet the following requirements: a) The total mass of impurities inside the compressor with direct current motor shall not exceed the values specified in Table 5; b) The impurity particle inside the compressor with direct current motor shall be no more than 0.5mm in diameter. Table 5 Total mass limits of impurities inside the compressor with direct current motor In mg Category of the electrically driven compressor assembly Class A Class B Class C The total mass of internal impurities 30 35 80 5.6.2 Internal moisture content Internal moisture content of the compressor with direct current motor shall not exceed 1.5×10-3. 5.6.3 Airtightness The total leakage of the compressor with direct current motor shall not exceed 14 g/a. 5.6.4 Compression strength Compressor with direct current motor shells and motor lead wire terminals shall be free of leakage and abnormal deformation. Note: In this test, breakage of any rubber sealing element is not taken into count in assessment. 5.6.5 Vibration resistance After the vibration resistance test, the compressor with direct current motor shall meet the following requirements: a) The compressor with direct current motor functions, free of any internal damage, or loose or damaged bolts; b) After the airtightness test, leakage of the compressor with direct current motor shall meet the requirements of 5.6.3; c) Test for the insulation resistance of motor stator winding to shell shall meet the requirements of 5.6.9; d) Voltage withstand test shall meet the requirements of 5.6.10; e) Through the retest according to the working conditions in Table 2, the measured refrigerating (heating) capacity of the electrically driven compressor assembly shall not be less than 90% of the values measured prior to the vibration resistance test; the measured refrigerating (heating) performance factor shall not be less than 82% of the values measured prior to the vibration resistance test; f) No abnormal noise, and the noise of the electrically driven compressor assembly is increased no more than 3 dB(A); g) The shell protection grade shall meet the requirements of 5.6.11. 5.6.6 Thermal cycle After separate high temperature resistance, low temperature resistance and temperature cycle tests, the compressor with direct current motor with enclosed air inlet and outlet shall meet the following requirements: a) Leakage of the compressor with direct current motor shall meet the requirements of 5.6.3; b) Test for the insulation resistance of motor stator winding to shell shall meet the requirements of 5.6.9; c) Voltage withstand test shall meet the requirements of 5.6.10; d) Through the retest according to the requirements of Table 2, the measured refrigerating (heating) capacity of the electrically driven compressor assembly shall not be less than 90% of the values measured prior to the thermal cycle test; the measured refrigerating (heating) performance factor shall not be less than 82% of the values measured prior to the thermal cycle test; e) The shell protection grade shall meet the requirements of 5.6.11.

Contents of GB/T 22068-2018

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Type and basic parameters 5 Technical requirements 6 Test method 7 Inspection rules 8 Marking, packaging, transportation and storage Annex A (Normative) Test method of temperature rise (resistance method)